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2. Human fertilization - Wikipedia

   en.wikipedia.org/wiki/Human_fertilization

   The average time to birth has been estimated to be 268 days (38 weeks and two days) from ovulation, with a standard deviation of 10 days or coefficient of variation of 3.7%. [33] Fertilization age is sometimes used postnatally (after birth) as well to estimate various risk factors.

3. Human reproduction - Wikipedia

   en.wikipedia.org/wiki/Human_reproduction

   This is an accepted version of this page This is the latest accepted revision, reviewed on 6 January 2025. Procreative biological processes of humanity Part of a series on Sex Biological terms Sexual dimorphism Sexual differentiation Feminization Virilization Sex-determination system XY XO ZW ZO Temperature-dependent Haplodiploidy Heterogametic sex Homogametic sex Sex chromosome X chromosome Y ...

4. Reproductive biology - Wikipedia

   en.wikipedia.org/wiki/Reproductive_biology

   Animal reproduction occurs by two modes of action, including both sexual and asexual reproduction. [1] In asexual reproduction the generation of new organisms does not require the fusion sperm with an egg. [1] However, in sexual reproduction new organisms are formed by the fusion of haploid sperm and eggs resulting in what is known as the ...

5. Human reproductive system - Wikipedia

   en.wikipedia.org/wiki/Human_reproductive_system

   Human reproduction usually involves internal fertilization by sexual intercourse. In this process, the male inserts his penis into the female's vagina and ejaculates semen, which contains sperm. A small proportion of the sperm pass through the cervix into the uterus and then into the fallopian tubes for fertilization of the ovum. Only one sperm ...

6. Category:Sexual reproduction - Wikipedia

   en.wikipedia.org/wiki/Category:Sexual_reproduction

   Download as PDF; Printable version; ... out of 7 total. H. Human reproduction (28 C, 52 P) M. ... Pages in category "Sexual reproduction"

7. Reproductive system - Wikipedia

   en.wikipedia.org/wiki/Reproductive_system

   The reproductive system of an organism, also known as the genital system, is the biological system made up of all the anatomical organs involved in sexual reproduction.Many non-living substances such as fluids, hormones, and pheromones are also important accessories to the reproductive system. [1]

8. Does Gatorade Hydrate You? - AOL

   www.aol.com/does-gatorade-hydrate-152500028.html

   24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Mail. Sign in ...

9. Age and female fertility - Wikipedia

   en.wikipedia.org/wiki/Age_and_female_fertility

   The average age of a girl's first period is 12 to 13 (12.5 years in the United States, [6] 12.72 in Canada, [7] 12.9 in the UK [8]) but, in postmenarchal girls, about 80% of the cycles are anovulatory in the first year after menarche, which declines to 50% in the third year, and to 10% by the sixth. [9]